:root {
      color-scheme: light;
      --ink: #14243b;
      --muted: #5d6d81;
      --blue: #145ce5;
      --blue-dark: #0c3d9f;
      --sky: #e8f2ff;
      --line: #dce6f2;
      --paper: #fff;
      --canvas: #f4f8ff;
      --teal: #087e83;
      --gold: #e5a52d;
      --container: 1180px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 88px; }
    body {
      margin: 0;
      color: var(--ink);
      background: linear-gradient(180deg, #f4f8ff 0%, #fff 42%, #f4f8ff 100%);
      font: 16px/1.65 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    }
    a { color: inherit; text-decoration: none; }
    button, input, select, textarea { font: inherit; }
    img { display: block; max-width: 100%; height: auto; }
    .container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
    .site-header {
      position: sticky; z-index: 20; top: 0;
      background: rgba(255,255,255,.96);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(12px);
    }
    .header-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 72px; }
    .brand { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; font-weight: 800; font-size: 18px; }
    .ai-page-logo { width: 38px; height: auto; }
    .nav-area { display: flex; align-items: center; gap: 18px; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; flex-wrap: wrap; }
    .nav-links a { padding: 8px 9px; color: #344760; font-size: 13px; white-space: nowrap; border-radius: 4px; }
    .nav-links a:hover, .nav-links a:focus-visible { background: var(--sky); color: var(--blue-dark); }
    .nav-actions { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
    .menu-toggle { display: none; }
    .button {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 44px; padding: 10px 18px; border: 1px solid transparent; border-radius: 5px;
      background: var(--blue); color: #fff; font-weight: 700; cursor: pointer;
      transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
    }
    .button:hover { background: var(--blue-dark); box-shadow: 0 8px 20px rgba(20,92,229,.2); transform: translateY(-2px); }
    .button.outline { color: var(--blue-dark); background: #fff; border-color: #b7cbea; }
    .button.outline:hover { background: var(--sky); }
    .button.small { min-height: 38px; padding: 8px 13px; font-size: 14px; }
    .hero {
      overflow: hidden; position: relative; padding: 72px 0 46px;
      background: linear-gradient(135deg, #e9f2ff 0%, #f7fbff 52%, #e8f7f7 100%);
      border-bottom: 1px solid #d8e5f4;
    }
    .hero::before, .hero::after { content: ""; position: absolute; pointer-events: none; border: 1px solid rgba(20,92,229,.12); transform: rotate(32deg); }
    .hero::before { width: 290px; height: 290px; right: 7%; top: -170px; border-radius: 36px; }
    .hero::after { width: 170px; height: 170px; right: 23%; bottom: -130px; border-radius: 50%; }
    .hero-grid { position: relative; display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr); align-items: center; gap: 56px; }
    .eyebrow { margin: 0 0 14px; color: var(--blue-dark); font-size: 13px; font-weight: 800; letter-spacing: 0; }
    h1 { max-width: 690px; margin: 0; font-size: clamp(36px, 5vw, 58px); line-height: 1.13; letter-spacing: 0; }
    .hero-copy { max-width: 650px; margin: 20px 0 24px; color: #435873; font-size: 18px; }
    .hero-buttons { display: flex; flex-wrap: wrap; gap: 12px; }
    .hero-note { margin: 15px 0 0; color: var(--muted); font-size: 13px; }
    .hero-console { position: relative; padding: 23px; border: 1px solid #c9daf0; border-radius: 8px; background: rgba(255,255,255,.84); box-shadow: 0 22px 55px rgba(34,79,140,.12); }
    .console-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding-bottom: 17px; border-bottom: 1px solid var(--line); font-weight: 800; }
    .console-label { color: var(--teal); font-size: 12px; }
    .flow-row { display: flex; align-items: center; gap: 12px; padding: 13px 0; border-bottom: 1px solid #edf1f7; }
    .flow-row:last-child { border-bottom: 0; padding-bottom: 0; }
    .flow-mark { display: grid; place-items: center; width: 34px; height: 34px; flex: 0 0 auto; border-radius: 6px; background: #e7f0ff; color: var(--blue-dark); font-weight: 800; }
    .flow-row strong { display: block; font-size: 14px; }
    .flow-row small { display: block; color: var(--muted); font-size: 12px; }
    .stat-band { padding: 22px 0; background: #fff; border-bottom: 1px solid var(--line); }
    .stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
    .stat { padding: 4px 20px; border-right: 1px solid var(--line); }
    .stat:first-child { padding-left: 0; }
    .stat:last-child { border: 0; }
    .stat strong { display: block; color: var(--blue-dark); font-size: 20px; }
    .stat span { color: var(--muted); font-size: 13px; }
    section.content-section { padding: 68px 0; }
    .section-head { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: 28px; }
    .section-head > div { max-width: 760px; }
    .section-kicker { margin: 0 0 8px; color: var(--teal); font-size: 12px; font-weight: 800; }
    h2 { margin: 0; font-size: 32px; line-height: 1.25; letter-spacing: 0; }
    .section-intro { margin: 10px 0 0; color: var(--muted); }
    .platform-band { background: #edf5ff; border-block: 1px solid #dae8f8; }
    .platform-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: 46px; align-items: start; }
    .platform-copy p { color: #4c6078; }
    .check-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 13px 22px; padding: 0; margin: 22px 0 0; list-style: none; }
    .check-list li { position: relative; padding-left: 22px; color: #334a64; }
    .check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--teal); font-weight: 900; }
    .model-box { padding: 22px; background: #fff; border: 1px solid #d8e4f1; border-radius: 6px; }
    .model-box h3 { margin: 0 0 13px; font-size: 17px; }
    .tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
    .tag-cloud span { padding: 5px 10px; background: #f0f5fb; border: 1px solid #e0e9f3; border-radius: 4px; color: #34506e; font-size: 13px; }
    .service-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
    .service-item { padding: 19px; background: #fff; border: 1px solid var(--line); border-top: 3px solid #2d72e8; border-radius: 5px; transition: transform .18s ease, box-shadow .18s ease; }
    .service-item:hover, .review:hover, .case-item:hover { transform: translateY(-3px); box-shadow: 0 12px 26px rgba(30,62,105,.09); }
    .service-item h3 { margin: 0 0 7px; font-size: 17px; }
    .service-item p { margin: 0; color: var(--muted); font-size: 14px; }
    .service-item.featured { border-top-color: var(--teal); }
    .workflow { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px; counter-reset: step; }
    .step { position: relative; padding: 20px 17px; background: #fff; border: 1px solid var(--line); border-radius: 5px; }
    .step::before { counter-increment: step; content: "0" counter(step); display: block; margin-bottom: 14px; color: var(--blue); font-weight: 900; font-size: 20px; }
    .step h3 { margin: 0 0 6px; font-size: 16px; }
    .step p { margin: 0; color: var(--muted); font-size: 13px; }
    .industry-band { background: #f1f8f8; border-block: 1px solid #dceceb; }
    .industry-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
    .industry { padding: 16px; background: #fff; border-left: 3px solid #138a8d; }
    .industry strong { display: block; margin-bottom: 4px; }
    .industry span { color: var(--muted); font-size: 13px; }
    .network-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border: 1px solid var(--line); background: #fff; }
    .network-item { padding: 23px; border-right: 1px solid var(--line); }
    .network-item:last-child { border: 0; }
    .network-item strong { display: block; color: var(--blue-dark); font-size: 17px; }
    .network-item p { margin: 6px 0 0; color: var(--muted); font-size: 14px; }
    .case-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 17px; }
    .case-item { overflow: hidden; display: grid; grid-template-columns: 150px 1fr; align-items: center; gap: 18px; padding: 14px; background: #fff; border: 1px solid var(--line); border-radius: 5px; transition: transform .18s ease, box-shadow .18s ease; }
    .case-image { width: 150px; aspect-ratio: 4 / 3; overflow: hidden; background: #edf3fa; }
    .case-image img { width: 100%; height: 100%; object-fit: cover; }
    .case-item h3 { margin: 0 0 6px; font-size: 17px; }
    .case-item p { margin: 0; color: var(--muted); font-size: 14px; }
    .case-square { display: grid; place-items: center; width: 100%; max-width: 150px; aspect-ratio: 1; overflow: hidden; background: #edf3fa; }
    .case-square img { width: 100%; height: 100%; object-fit: cover; }
    .review-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
    .review { padding: 20px; background: #fff; border: 1px solid var(--line); border-radius: 5px; transition: transform .18s ease, box-shadow .18s ease; }
    .review p { margin: 0 0 16px; color: #43566d; }
    .review strong { display: block; font-size: 14px; }
    .review span { color: var(--muted); font-size: 12px; }
    .rating-panel { display: grid; grid-template-columns: .68fr 1.32fr; gap: 28px; align-items: center; padding: 26px; background: #fff; border: 1px solid #cfdef0; border-radius: 6px; }
    .rating-score { padding: 20px; text-align: center; background: #edf4ff; border-radius: 5px; }
    .rating-score strong { display: block; color: var(--blue-dark); font-size: 48px; line-height: 1.2; }
    .stars { color: #bf7a00; letter-spacing: 0; font-size: 20px; }
    .rating-score span { color: #4b6078; font-size: 13px; }
    .table-wrap { overflow-x: auto; }
    table { width: 100%; min-width: 650px; border-collapse: collapse; background: #fff; }
    th, td { padding: 13px 14px; text-align: left; border: 1px solid var(--line); }
    th { color: #193b70; background: #eaf2ff; font-size: 14px; }
    td { color: #40536a; font-size: 14px; }
    td:first-child { color: var(--ink); font-weight: 700; }
    .token-band { color: #fff; background: #123f8d; }
    .token-band .section-kicker { color: #a9d8ed; }
    .token-band h2, .token-band .section-intro { color: #fff; }
    .token-layout { display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: center; }
    .token-layout p { max-width: 760px; margin-bottom: 0; color: #d6e5fc; }
    .token-layout .button { color: #123f8d; background: #fff; }
    .matching { display: grid; grid-template-columns: .85fr 1.15fr; gap: 36px; align-items: start; }
    .matching-copy { padding-top: 8px; }
    .matching-copy p { color: var(--muted); }
    .contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; padding: 22px; background: #fff; border: 1px solid var(--line); border-radius: 5px; }
    .field { display: grid; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    .field label { font-size: 13px; font-weight: 700; }
    .field input, .field select, .field textarea { width: 100%; min-width: 0; padding: 11px 12px; color: var(--ink); background: #fbfdff; border: 1px solid #cbd8e7; border-radius: 4px; }
    .field textarea { min-height: 112px; resize: vertical; }
    .contact-form .button { justify-self: start; }
    .about-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 32px; align-items: start; }
    .about-copy p { color: #4c6078; }
    .about-points { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
    .about-point { padding: 15px; border-left: 3px solid var(--blue); background: #eef5ff; }
    .about-point strong { display: block; font-size: 14px; }
    .about-point span { color: var(--muted); font-size: 13px; }
    .faq-list { display: grid; gap: 9px; }
    details { background: #fff; border: 1px solid var(--line); border-radius: 4px; }
    summary { position: relative; padding: 15px 42px 15px 17px; cursor: pointer; list-style: none; font-weight: 700; }
    summary::-webkit-details-marker { display: none; }
    summary::after { content: "+"; position: absolute; right: 17px; top: 12px; color: var(--blue); font-size: 22px; }
    details[open] summary::after { content: "−"; }
    details p { margin: 0; padding: 0 17px 16px; color: var(--muted); }
    .article-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
    .article-link { display: block; padding: 18px; background: #fff; border: 1px solid var(--line); border-radius: 4px; }
    .article-link:hover { border-color: #8cb2ed; }
    .article-link span { display: block; color: var(--muted); font-size: 12px; }
    .article-link strong { display: block; margin: 6px 0; color: var(--blue-dark); }
    .article-link small { color: #64758a; }
    .footer { padding: 36px 0 22px; color: #e5edfa; background: #102d57; }
    .footer-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; }
    .footer h2 { margin: 0 0 10px; color: #fff; font-size: 20px; }
    .footer p { margin: 5px 0; color: #d2dff2; font-size: 14px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 17px; margin-top: 12px; }
    .footer a { color: #e6f0ff; text-decoration: underline; text-underline-offset: 3px; }
    .footer a:hover { color: #fff; }
    .footer-qr { display: flex; align-items: center; gap: 15px; margin-top: 13px; }
    .footer-qr img { width: 92px; border: 3px solid #fff; background: #fff; }
    .copyright { margin-top: 25px; padding-top: 15px; border-top: 1px solid #355173; color: #c8d5e8; font-size: 12px; }
    .float-contact { position: fixed; z-index: 15; right: 18px; bottom: 20px; }
    .float-contact a { display: inline-flex; align-items: center; gap: 8px; padding: 11px 15px; color: #fff; background: var(--teal); border-radius: 5px; box-shadow: 0 7px 20px rgba(5,69,74,.24); font-weight: 700; }
    .reveal { opacity: 0; transform: translateY(12px); transition: opacity .5s ease, transform .5s ease; }
    .reveal.is-visible { opacity: 1; transform: translateY(0); }
    .visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
    @media (max-width: 980px) {
      .header-inner { min-height: 66px; }
      .nav-area { gap: 10px; }
      .nav-links a { padding-inline: 6px; font-size: 12px; }
      .nav-actions .button { padding-inline: 12px; }
      .hero-grid { gap: 28px; }
      .service-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
      .workflow { grid-template-columns: repeat(3, minmax(0, 1fr)); }
      .industry-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    }
    @media (max-width: 720px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .header-inner { min-height: 64px; }
      .nav-area { position: relative; }
      .menu-toggle { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; padding: 0; border: 1px solid var(--line); border-radius: 4px; color: var(--ink); background: #fff; cursor: pointer; }
      .menu-toggle span { font-size: 20px; line-height: 1; }
      .nav-links { display: none; position: absolute; top: 52px; right: 0; width: min(340px, calc(100vw - 32px)); max-height: 72vh; overflow: auto; padding: 10px; background: #fff; border: 1px solid var(--line); box-shadow: 0 12px 25px rgba(22,51,91,.14); align-items: stretch; }
      .nav-links.is-open { display: grid; grid-template-columns: 1fr 1fr; }
      .nav-links a { padding: 9px 10px; font-size: 13px; }
      .nav-actions .button { display: none; }
      .hero { padding: 48px 0 34px; }
      .hero-grid, .platform-layout, .matching, .about-grid { grid-template-columns: 1fr; }
      .hero-grid { gap: 26px; }
      h1 { font-size: 39px; }
      .hero-copy { font-size: 16px; }
      .hero-console { padding: 18px; }
      .stats { grid-template-columns: repeat(2, 1fr); gap: 14px 0; }
      .stat { padding: 0 12px; }
      .stat:nth-child(2) { border-right: 0; }
      .stat:first-child, .stat:nth-child(3) { padding-left: 0; }
      section.content-section { padding: 48px 0; }
      .section-head { display: block; margin-bottom: 21px; }
      h2 { font-size: 27px; }
      .service-grid, .review-grid, .article-grid { grid-template-columns: 1fr; }
      .workflow { grid-template-columns: repeat(2, minmax(0, 1fr)); }
      .network-row { grid-template-columns: 1fr; }
      .network-item { border-right: 0; border-bottom: 1px solid var(--line); }
      .network-item:last-child { border-bottom: 0; }
      .case-grid { grid-template-columns: 1fr; }
      .rating-panel { grid-template-columns: 1fr; padding: 17px; }
      .token-layout { grid-template-columns: 1fr; }
      .token-layout .button { justify-self: start; }
      .footer-grid { grid-template-columns: 1fr; gap: 22px; }
      .float-contact { right: 12px; bottom: 12px; }
      .float-contact a { padding: 10px 12px; font-size: 14px; }
    }
    @media (max-width: 430px) {
      .brand { gap: 7px; font-size: 16px; }
      .ai-page-logo { width: 32px; }
      .hero-buttons .button { width: 100%; }
      .check-list, .about-points { grid-template-columns: 1fr; }
      .workflow { grid-template-columns: 1fr 1fr; }
      .case-item { grid-template-columns: 105px 1fr; gap: 12px; padding: 10px; }
      .case-image { width: 105px; }
      .case-square { max-width: 105px; }
      .contact-form { grid-template-columns: 1fr; padding: 16px; }
      .field.full { grid-column: auto; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }